Geometric parameterization of the YBaCo4O7 structure type: Implications for stability of the hexagonal form and oxygen uptake
authors Avdeev, M; Kharton, VV; Tsipis, EV
nationality International
journal JOURNAL OF SOLID STATE CHEMISTRY
author keywords YBaCo4O7;
keywords BOND-VALENCE PARAMETERS; CRYSTAL-STRUCTURE; COBALT OXIDES; RARE-EARTH; X-RAY; CAPABILITY; TM; SUBSTITUTION; LU; YB
abstract We explore the stability of the hexagonal form of MBaCo4O7 cobaltites in terms of geometric characteristics of the crystal structure and Global Instability Index (GII) based on the bond-valence considerations. Mismatch between an M3+/(2+) and the three-dimensional network of CoO4 tetrahedra, whether expressed using an M ionic radii or GII, is shown to essentially determine both the temperature of structural transition to an orthorhombic modification and oxygen storage properties. A number of M cations not reported in the literature are identified to be suitable for the octahedral sites in an MBaCo4O7 structure. (C) 2010 Elsevier Inc. All rights reserved.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 0022-4596
year published 2010
volume 183
issue 10
beginning page 2506
ending page 2509
digital object identifier (doi) 10.1016/j.jssc.2010.08.019
web of science category Chemistry, Inorganic & Nuclear; Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000282868900038
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journal analysis (jcr 2017):
journal impact factor 2.179
5 year journal impact factor 2.130
category normalized journal impact factor percentile 53.605
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